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Perovskite solar cell and preparation method thereof

A solar cell and perovskite technology, applied in the field of solar cells, can solve the problems of small grain size, hindering the photoelectric conversion rate of cells, and interface defects.

Active Publication Date: 2022-08-05
CHINA THREE GORGES CORPORATION +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the small grain size of the perovskite thin film battery in the prior art, which leads to interface defects and hinders the defect of the photoelectric conversion rate of the battery, thereby providing a perovskite solar cell and its Preparation

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  • Perovskite solar cell and preparation method thereof

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Embodiment 1

[0054] This embodiment provides a preparation method of a perovskite solar cell, comprising the following steps:

[0055] 1) The FTO conductive glass was ultrasonically cleaned with soapy water, deionized water, absolute ethanol, and acetone, and then cleaned with ultraviolet ozone.

[0056] 2) The 15 wt% SnO 2 The colloidal solution was diluted with deionized water to obtain 3.75 wt% SnO 2 colloidal solution. The prepared 3.75 wt% tin oxide colloidal solution was sucked up with a plastic tip dropper, covered with FTO conductive glass, spin-coated at 4000 rpm for 35 s, and then annealed at 140 °C for 35 min to obtain an electron transport layer. Dissolve 0.5 mg of the metal chelating color developer amino black 10B in 1 ml of absolute ethanol, use a glue tip dropper to draw the solution and cover it with the FTO conductive glass coated with the electron transport layer, spin at 3000 rpm for 30 s, Annealed at 100 °C for 10 min.

[0057] 3) The PbI 2 (7.50 g) and CsI (0.30 ...

Embodiment 2

[0062] This embodiment provides a preparation method of a perovskite solar cell, comprising the following steps:

[0063] 1) The FTO conductive glass was ultrasonically cleaned with soapy water, deionized water, absolute ethanol, and acetone, and then cleaned with ultraviolet ozone.

[0064] 2) The 15 wt% SnO 2 The colloidal solution was diluted with deionized water to obtain 3.75 wt% SnO 2 colloidal solution. The prepared 3.75 wt% tin oxide colloidal solution was sucked with a plastic tip dropper, covered with FTO conductive glass, spin-coated at 4000 rpm for 35 s, and then annealed at 150 °C for 30 min to obtain an electron transport layer. Dissolve 0.5 mg of the metal chelating color developer red phenanthroline disulfonate in 1 ml of anhydrous ethanol, draw the solution with a plastic tip dropper and cover it with the FTO conductive glass coated with the electron transport layer, spin at 3000 rpm. After coating for 30 s, it was annealed at 100 °C for 10 min.

[0065] 3...

Embodiment 3

[0070] This embodiment provides a preparation method of a perovskite solar cell, comprising the following steps:

[0071] 1) The FTO conductive glass was ultrasonically cleaned with soapy water, deionized water, absolute ethanol, and acetone, and then cleaned with ultraviolet ozone.

[0072] 2) The 15 wt% SnO 2 The colloidal solution was diluted with deionized water to obtain 3.75 wt% SnO 2 colloidal solution. The prepared 3.75 wt% tin oxide colloidal solution was sucked with a plastic tip dropper, covered with FTO conductive glass, spin-coated at 4000 rpm for 35 s, and then annealed at 160 °C for 35 min to obtain an electron transport layer. Dissolve 0.5 mg of the metal chelating color developer amino black 10B in 1 ml of absolute ethanol, use a glue tip dropper to draw the solution and cover it with the FTO conductive glass coated with the electron transport layer, spin at 3000 rpm for 30 s, Annealed at 100 °C for 10 min.

[0073] 3) The PbI 2 (7.20 g), CsI (0.40 g) wer...

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Abstract

The invention discloses a perovskite solar cell and a preparation method thereof, belongs to the technical field of solar cells, and overcomes the defects that in the prior art, a perovskite thin film cell is small in grain size, so that interface defects are caused, and the photoelectric conversion rate of the cell is hindered. The perovskite solar cell is sequentially provided with a bottom electrode, an electron transport layer modified by a metal chelating color developing agent, a perovskite light absorption layer, a hole transport layer and a top electrode. The photoelectric conversion efficiency of the perovskite solar cell can be improved.

Description

technical field [0001] The invention belongs to the technical field of solar cells, and particularly relates to a perovskite solar cell and a preparation method thereof. Background technique [0002] The excellent optoelectronic properties of organic-inorganic perovskite solar cells have attracted extensive attention of scientific researchers as next-generation photovoltaic devices. As light-absorbing materials for solar cells, perovskite materials not only have efficient light absorption capacity and carrier mobility, but also have tunable band gaps, making them excellent photovoltaic materials, which have attracted a lot of attention. Based on the above Due to its excellent properties, perovskite materials can act as light absorbing materials in photovoltaic devices. The solar photovoltaic industry has broad prospects for development in the field of optoelectronics. As a research hotspot in the field of solar power generation, perovskite solar cells have dramatically imp...

Claims

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Application Information

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IPC IPC(8): H01L51/46H01L51/42H01L51/48
CPCH10K85/615H10K85/631H10K30/10H10K85/6572Y02P70/50H10K30/40H10K30/85H10K85/50Y02E10/549
Inventor 吴云翼张树芳尹立坤耿全明贾祥瑞
Owner CHINA THREE GORGES CORPORATION
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